I like my tire step for these kinds of things, but if I had a larger garage I'd have an overhead creeper.
Be careful you don't break the hardware getting the old one off. Apparently the screws like to seize and break upon attempted removal from what I've read here. What I do with potentially seized hardware wherever I encounter it: Whack it with a hammer (to crack the corrosion between threads), then soak it down with penetrating lubricant. And just so it's said: WD-40 is NOT a penetrating lubricant. For the itty bitties like the distributor cap screws, of course, a center punch is used. I don't often break fasteners -- the job takes a little longer than it would if everything would just come out nicely without the additional effort, but a helluva lot less time than hauling out the extraction kit and maybe the Heli-Coil kit.